Video Compressor
Compress MP4 and WebM videos online for free. Our video compressor lets you choose output resolution (240p to 1080p), video bitrate (250 kbps to 8 Mbps), and codec (VP9/WebM or H.264/MP4) — with optional audio track removal for maximum compression. All processing happens in your browser using the native MediaRecorder API. No signup required.
Upload a video, choose resolution, bitrate, and codec, then compress it entirely in your browser. No server upload — your video never leaves your device.
Drop your video file here
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MP4, WebM, MOV, AVI, and more are supported
Why Use Our Video Compressor?
Instant Browser-Based Video Compression
Compress MP4 and WebM videos directly in your browser using the native MediaRecorder API — no server upload, no waiting for cloud processing, no file size limits.
Secure Video Compressor Online
Your video never leaves your device when you compress it. 100% client-side processing means complete privacy — no cloud storage, no server logs, no data exposure.
Video Compressor Online — No Installation
Compress videos directly in your browser. No software downloads, no plugins, no account required. Works on any modern browser on any operating system.
Resolution, Bitrate, and Codec Control
Choose output resolution (240p to 1080p), video bitrate (250 kbps to 8 Mbps), and codec (VP9/WebM or H.264/MP4) independently — with optional audio track removal for maximum compression.
Common Use Cases for Video Compressor
Social Media & Messaging Uploads
Compress videos to meet WhatsApp (16 MB), Instagram (100 MB), and Twitter/X (512 MB) upload limits. Reduce resolution to 720p and bitrate to 1–2 Mbps for optimal social media quality.
Email Video Attachments
Compress videos to under 25 MB for Gmail and Outlook attachment limits. Reducing a 1080p screen recording to 720p at 1 Mbps typically achieves 70–80% size reduction.
Discord & Slack File Sharing
Compress videos to under 8 MB (Discord free) or 50 MB (Slack) for direct file sharing in team channels. Lower resolution and bitrate settings make short clips shareable without Nitro.
LMS & Portal Video Submissions
Compress video assignments and presentations to meet LMS upload limits (Moodle, Canvas, Blackboard). Reducing a 10-minute lecture recording to 480p at 500 kbps typically fits under 50 MB.
Web Embedding & Bandwidth Reduction
Compress videos for web embedding to reduce page load times and bandwidth costs. WebM with VP9 codec at 720p and 1 Mbps is the optimal format for web video delivery.
Client Deliverable Compression
Compress video deliverables before sending to clients via project management tools or cloud storage. Reducing 4K footage to 1080p at 4 Mbps cuts file size by 60–80% with minimal visible quality loss.
Understanding Video Compression
What is Video Compression?
Video compression is the process of reducing the file size of a video by encoding it at a lower bitrate, smaller resolution, or with a more efficient codec. Our video compressoruses the browser's native MediaRecorder APIand Canvas API to re-encode your video entirely locally — no server upload, no ffmpeg.wasm dependency, no external libraries. The video is decoded frame-by-frame, scaled to the target resolution via Canvas, and re-encoded at the specified bitrate using your browser's hardware-accelerated video encoder. This approach works for any video format your browser can play — MP4, WebM, MOV, AVI, and more.
How Our Video Compressor Works
- 1Upload your video:Drag and drop any video file (MP4, WebM, MOV, AVI) onto the drop zone. The file is loaded into the browser's video decoder — no data is sent to any server.
- 2Choose compression settings: Select output resolution (240p to 1080p), video bitrate (250 kbps to 8 Mbps), codec (VP9/WebM or H.264/MP4), and whether to remove the audio track. Lower resolution and bitrate produce smaller files.
- 3Download the compressed video: The video is re-encoded in real-time using Canvas + MediaRecorder and downloads automatically when complete. The results panel shows original size, compressed size, and reduction percentage.
Compression Settings Guide
- Resolution: Halving the resolution (e.g., 1080p → 540p) reduces the number of pixels by 75%, which is the single biggest lever for file size reduction. 720p is the sweet spot for most sharing use cases.
- Bitrate: Controls how many bits are used per second of video. 2 Mbps is the recommended default for 720p content. 1 Mbps is suitable for 480p. Going below 500 kbps produces visible compression artifacts.
- VP9 (WebM):Google's open codec — typically 30–50% smaller than H.264 at the same visual quality. Best for web delivery and Chrome/Firefox.
- H.264 (MP4): The most widely compatible codec — supported by virtually all devices, players, and platforms. Use when compatibility matters more than file size.
Important Limitations
The video compressor uses the browser's native MediaRecorder API, which means compression quality depends on your browser's hardware encoder. Chrome and Edge typically produce the best results. The tool processes video in real-time — a 5-minute video takes approximately 5 minutes to compress. Keep the browser tab active during compression. For very long videos (over 30 minutes), consider splitting the video first using our Video Trimmer tool.
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Frequently Asked Questions About Video Compressor
A video compressor is a tool that reduces the file size of a video by re-encoding it at a lower bitrate, smaller resolution, or with a more efficient codec. Our free video compressor online works entirely in your browser using the native MediaRecorder API — your video is never uploaded to any server.
Reducing bitrate and resolution does reduce video quality, but the impact depends on the settings. At 2 Mbps and 720p, most videos look excellent for sharing and web use. Going below 500 kbps or 360p will produce visible compression artifacts. The default settings (2 Mbps, 720p) are the recommended balance for most use cases.
Absolutely. Our video compressor processes everything locally in your browser using the Canvas and MediaRecorder APIs. Your video is never uploaded to any server, never stored, and never leaves your device. All compression happens entirely on your machine.
Yes — 100% free, forever. No signup, no account, no premium tier, no file size limits, and no ads interrupting your workflow. Just upload your video, compress, and download.
VP9 is Google's open codec used in WebM containers — it typically achieves 30–50% smaller files than H.264 at the same visual quality. H.264 in MP4 is the most widely compatible format, supported by virtually all devices, players, and platforms. Use VP9/WebM for web delivery and H.264/MP4 when compatibility matters.
The video compressor uses the browser's MediaRecorder API, which processes video in real-time — it plays the video through a Canvas element and records the output. A 5-minute video takes approximately 5 minutes to compress. This is a limitation of the browser-native approach, which avoids the need for ffmpeg.wasm or server-side processing.
The video compressor supports any video format your browser can play natively — MP4 (H.264, H.265), WebM (VP8, VP9), MOV, AVI, and OGG. The output format is either WebM (VP9) or MP4 (H.264) depending on your codec selection.
Typical video compression achieves 40–80% size reduction depending on the original bitrate and your target settings. Reducing a 1080p video at 8 Mbps to 720p at 2 Mbps typically achieves 70–75% reduction. Screen recordings and animated content compress more aggressively than live-action footage.
Since compression runs entirely in your browser, the practical limit depends on your device's available RAM and the video duration. Most modern devices handle videos up to 1 GB without issues. For very long videos (over 30 minutes), consider splitting the video first using our Video Trimmer tool.